Specifies the display screen on
which the Xv Server is to accept requests from Xv clients. If the display
option is not specified, Xv uses the display screen specified by your DISPLAY
environment variable. The display option has the format hostname:number.
Using two colons (::) instead of one (:) indicates that DECnet is to be
used for transport.

port

Defines the port associated with the display and
adaptor for which the optimum size is to be calculated.

motion

Specifies
True if the destination size needs to support full motion, and False if
the destination size need only support still images.

vw,vh

Specifies the
size of the source video region desired.

dw,dh

Specifies the size of the
destination drawable region desired.

p_dw,p_dh

Pointers to where the closest
destination sizes supported by the server are returned.